WO2017212649A1

WO2017212649A1 - Electric fan

Info

Publication number: WO2017212649A1
Application number: PCT/JP2016/067429
Authority: WO
Inventors: 雄一安田; 芳彦安田
Original assignee: 三菱電機株式会社
Priority date: 2016-06-10
Filing date: 2016-06-10
Publication date: 2017-12-14
Also published as: TWI645118B; CN109219702B; KR102053048B1; JPWO2017212649A1; KR20180123154A; CN109219702A; JP6548826B2; TW201742988A

Abstract

Disclosed is an electric fan, wherein: a guard ring (100) is provided with a screw hole (108) into which a clip fixing screw (7) is attached; and a lock clip (300) includes a screw penetrating part provided with a long hole (308) through which the clip fixing screw (7) to be attached to the screw hole (108) penetrates, and a catching part (303) that engages with the guard ring (100) when the clip fixing screw (7) is arranged on one end (308a) side of the long hole (308) and disengages from the guard ring (100) when the clip fixing screw (7) is arranged on the other end (308b) side of the long hole (308).

Description

Fan

The present invention relates to a fan provided with a fan guard that facilitates disassembly and prevents accidental dropout.

As disclosed in Patent Document 1, the conventional electric fan includes a stand part, a rotating part supported by the stand part and having a blade driving motor, blades driven by the motor, and a guard surrounding the fan. The guard has a structure that can be divided so that access to the blades is possible, and the division of the divided guards is performed by a locking portion provided on the guard circumferential ring member with respect to the rotating shaft. In addition, a lock clip that prevents the guard from moving in the disassembly direction is installed so that the engagement is not unexpectedly disengaged by vibration or shock.

The lock clip is pivotally supported by the ring component, and the locking is completed when the hook portion provided on the lock clip is locked to the ring component or the guard. Engagement and release of the lock clip is performed by the user applying a load to the handle of the lock clip. Compared to a structure in which the guard is directly fixed by a screw, the need to remove the screw is unnecessary, and the screw is not lost. There are advantages.

Utility Model Registration No. 3195289

The lock clip needs to avoid disengagement of the lock clip due to mischief or accidental contact of children or pets from its role, but in the case of a structure that engages and releases by applying a load, In order to achieve this, there is a problem that the operation of a powerless user such as an elderly person becomes difficult, and the operation load changes due to variations in part dimensions or deformation due to aging. Furthermore, since the handle of the lock clip protrudes so as to easily apply a load, there is also a problem that the clothes are hooked unintentionally.

The present invention has been made in view of the above, and an object of the present invention is to obtain an electric fan that is less prone to erroneous operation and that has a reduced operating load and is provided with a lock clip.

In order to solve the above-described problems and achieve the object, the present invention provides a rotating part including a motor, a blade driven by the motor, a guard rear part fixed to the rotating part, and a blade opposite to the motor. A guard front portion that covers from the side, a guard ring that connects the guard rear portion and the guard front portion, the guard that can be divided in the axial direction of the motor, and the engagement between the guard front portion and the guard ring is released. An electric fan including a lock clip to be prevented and a clip fixing screw that pivotally supports the lock clip on the guard ring, and the guard ring is provided with a screw hole to which the clip fixing screw is attached. The lock clip engages with the guard ring when the clip fixing screw is placed at one end of the long hole, and the screw penetration part provided with a long hole through which the clip fixing screw attached to the screw hole passes. And a hook portion that is disengaged from the guard ring when the screw is disposed on the other end side of the elongated hole.

The electric fan according to the present invention has an effect that it is difficult to cause an erroneous operation of the lock clip and the operation load of the lock clip can be reduced.

The disassembled perspective view of the rotation part of the electric fan which concerns on Embodiment 1 of this invention. Front view of the guard ring of the electric fan according to Embodiment 1. The expanded perspective view which looked at the lower end of the guard ring of the electric fan which concerns on Embodiment 1 from the circumference inner side The expanded perspective view which looked at the lower end of the guard ring of the electric fan which concerns on Embodiment 1 from the circumference outer side Rear view of guard front part of electric fan according to Embodiment 1 The perspective view of the lock clip of the electric fan which concerns on Embodiment 1. FIG. The exploded enlarged view of the coupling | bond part of the guard ring and lock clip of the electric fan which concerns on Embodiment 1 The enlarged view of the coupling | bond part of the guard ring and lock clip of the electric fan which concerns on Embodiment 1. FIG. The enlarged view of the coupling | bond part of the guard ring and lock clip of the electric fan which concerns on Embodiment 1. FIG. The expanded sectional view of the joint part of the guard ring and lock clip of the electric fan which concerns on Embodiment 2 of this invention The disassembled enlarged view of the coupling | bond part of the guard ring and lock clip of the electric fan which concerns on Embodiment 3 of this invention. The expanded sectional view of the joint part of the guard ring and lock clip of the electric fan which concerns on Embodiment 3

Hereinafter, a fan according to an embodiment of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is an exploded perspective view of a rotating portion of the electric fan according to Embodiment 1 of the present invention. As shown in FIG. 1, the rotating unit 1 is supported by a stand unit 21 that supports the whole, a rotating unit base 2 that includes a motor 22, a blade 3 that is driven by the motor 22, and a blade 3 that is fixed to the motor 22. The spinner 4, the guard rear part 6 that is clamped and fixed to the rotating part base 2 by the guard fixing component 5, the guard ring 100 that is fixed to the guard rear part 6, and the guard rear part 6 that is engaged with the guard ring 100 3, a guard front portion 200 that surrounds 3, a lock clip 300 that is attached to the guard ring and prevents the guard front portion 200 from moving in a direction that disengages the guard ring 100, and a clip fixing screw 7.

FIG. 2 is a front view of the guard ring of the electric fan according to the first embodiment. FIG. 3 is an enlarged perspective view of the lower end of the guard ring of the electric fan according to Embodiment 1 as viewed from the inner circumference. FIG. 4 is an enlarged perspective view of the lower end of the guard ring of the electric fan according to Embodiment 1 as viewed from the outer circumference. As shown in FIGS. 2 to 4, on the inner peripheral surface 102 of the circumferential portion 101 of the guard ring 100, guard

rear engagement portions

103 a, 103 b, and 103 c that are formed of a pair of protrusions arranged in the axial direction of the motor 22. , 103d, 103e, 103f, 103g, and 103h. In the following description, the guard

rear engagement portions

103a, 103b, 103c, 103d, 103e, 103f, 103g, and 103h are referred to as guard rear engagement portions 103 when it is not necessary to handle them individually. The guard ring 100 is engaged with the guard rear portion 6 by the circumferential portion 6 a of the guard rear portion 6 being locked between the pair of protrusions of the guard rear engagement portion 103. The guard rear portion 6 fixed to the rotating portion 1, the guard front portion 200 that covers the blade 3 from the side opposite to the motor 22, and the guard ring 100 that connects the guard rear portion 6 and the guard front portion 200 are the shaft of the motor 22. It constitutes a guard that can be divided in the direction.

Further,

projections

104 a, 104 b, 104 c, 104 d, 104 e, 104 f, 104 g, 104 h for locking the guard front part 200 are formed on the inner peripheral surface 102 of the circumferential part 101. In the following description, the

protrusions

104a, 104b, 104c, 104d, 104e, 104f, 104g, and 104h are referred to as protrusions 104 when it is not necessary to handle them individually. A hooking hole 105 penetrating from the inner peripheral surface 102 to the outer peripheral surface 106 is formed in the circumferential portion 101. A convex portion 107 is formed on the outer peripheral surface 106 of the circumferential portion 101. The convex portion 107 includes a screw hole 108 having an axis parallel to the axis of the circumferential portion 101.

FIG. 5 is a rear view of the guard front part of the electric fan according to the first embodiment. As shown in FIG. 5, the guard front portion 200 is a circular grill portion 201 and a cylinder that protrudes concentrically from the back surface of the grill portion 201 and has an outer diameter that is the same as the inner diameter of the inner peripheral surface 102 of the guard ring 100. When the portion 202 and the cylindrical portion 202 are inserted inside the circumferential portion 101 of the guard ring 100,

escape portions

203a, 203b, 203c, 203d, 203e, 203f, and 203g that avoid interference with the protrusion 104, and a

relief portion

203a , 203b, 203c, 203d, 203e, 203f, and 203g, the

hooking grooves

205a, 205b, 205c, 205d, and 205e formed across the cylindrical portion 202 from the

respective side surfaces

204a, 204b, 204c, 204d, 204e, 204f, and 204g. , 205f, 205g, from the cylindrical portion 202 toward the outer periphery of the grill portion 201 Comprises out the clip abutment portion 207, and a clip abutting outer peripheral surface 206 is formed across the side surface 204h of the hooking groove 205h. In the following description, when the

escape parts

203a, 203b, 203c, 203d, 203e, 203f, and 203g do not need to be handled individually, they are denoted as the escape part 203. In the following description, the hooking

grooves

205a, 205b, 205c, 205d, 205e, 205f, and 205g are referred to as hooking grooves 205 when it is not necessary to handle them individually.

The guard front part 200 aligns the protrusion 104 of the guard ring 100 and the escape part 203 so that the cylindrical part 202 is inserted into the circumferential part 101 of the guard ring 100, and then the protrusion 104 fits into the catching groove 205. It is engaged with the guard ring 100 by being rotated.

FIG. 6 is a perspective view of the lock clip of the electric fan according to the first embodiment. As shown in FIG. 6, the lock clip 300 is a surface that becomes a mating surface between the main body 301 having a shape along the outer peripheral surface 106 of the guard ring 100 and the outer peripheral surface 106 when the main body 301 is fixed to the guard ring 100. A hook portion 303 formed in 302 and a housing portion 305 formed on the opposite side of the hook portion 303 with the main body 301 interposed therebetween. The hook portion 303 has a shape in which a groove 304 is formed between the hook portion 303 and the surface 302. The housing portion 305 is provided with an opening 306 on the surface 302 side. In addition, a long hole 308 is provided on the side surface 307 of the housing unit 305 so as to extend in the longitudinal direction toward the hooking unit 303. The long hole 308 constitutes a screw penetration part through which the clip fixing screw 7 attached to the screw hole 108 passes. A counterbore portion 309 to which the screw head of the clip fixing screw 7 is fitted is provided at the end of the elongated hole 308 opposite to the hooking portion 303. The hook portion 303 is provided with a protrusion 310 at an end on the side opposite to the surface 302.

FIG. 7 is an exploded view of a joint portion between the guard ring and the lock clip of the electric fan according to the first embodiment. 8 and 9 are enlarged views of a joint portion between the guard ring and the lock clip of the electric fan according to Embodiment 1. FIG. In order to make it easy to see the shape of the part to be explained, the illustration of the rear part of the guard is omitted in each of FIGS. As shown in FIG. 7, since the interval between the hooking hole 105 and the convex portion 107 is the same as the gap between the hooking portion 303 and the housing portion 305, a lock clip is provided in the hooking hole 105 of the guard ring 100. At the same time as the 300 hook portions 303 are inserted, the convex portion 107 is inserted into the housing portion 305. In a state where the convex portion 107 is inserted into the housing portion 305, the lock clip 300 can be rotated and slid on the guard ring 100 by passing the elongated hole 308 and tightening the clip fixing screw 7 into the screw hole 108. It is pivotally supported.

In a state where the lock clip 300 is pivotally supported by the guard ring 100 so as to be rotatable and slidable, the groove 304 is formed so that the surface 302 of the lock clip 300 contacts the outer peripheral surface 106 of the guard ring 100 as shown in FIG. When the clip fixing screw 7 is slid to a position where it is locked to the edge 109 of the hooking hole 105, the clip fixing screw 7 comes into contact with the end of the elongated hole 308 on the side where the spot facing portion 309 is provided. That is, the hook 303 engages with the guard ring 100 when the clip fixing screw 7 is disposed on the end 308 a side of the elongated hole 308. By tightening the clip fixing screw 7 with the hook portion 303 engaged with the guard ring 100, the screw head fits into the counterbore portion 309, and the lock clip 300 is fixed so that it cannot slide or rotate.

As described above, since the fixing and releasing which are conventionally performed by elastically deforming the lock clip are performed by tightening and tightening the clip fixing screw 7, it is not necessary to apply a large load. Accordingly, the lock clip 300 can have a shape that does not have a handle that protrudes to the outside of the product.

Further, at this time, the protrusion 310 abuts against the surface 208 of the clip abutting portion 207 of the guard front portion 200 to prevent the guard front portion 200 from rotating and releasing the engagement with the guard ring 100.

On the other hand, as shown by an arrow A in FIG. 9, when the lock clip 300 slides to a position where the groove 304 is not locked to the edge 109, the lock clip 300 has the hook 303 as a hook hole with the clip fixing screw 7 as an axis. Rotation is possible in the direction indicated by arrow B in FIG. At this time, the protrusion 310 moves out of the rotation range of the clip abutting portion 207, and the guard front portion 200 can be detached from the guard ring 100. That is, the hook portion 303 is disengaged from the guard ring 100 when the clip fixing screw 7 is disposed on the other end 308 b side of the elongated hole 308.

In addition, in the state where the screw head of the clip fixing screw 7 is fitted to the spot facing portion 309, the lock clip 300 cannot be slid even if a load is applied to the lock clip 300. Absent.

The shape of the lock clip 300 and the guard ring 100 may be a shape in which a convex portion or a hook hole is provided in the lock clip 300 and a housing portion or a hook portion is provided in the guard ring 100.

In the above description, the guard is composed of the guard front part 200, the guard ring 100, and the guard rear part 6. However, the guard ring 100 may be integrated with the guard rear part 6 or the guard front part 200. When the guard ring 100 and the guard front part 200 are integrated, the structure of the engaging part between the guard ring 100 and the guard front part 200 in the above description is reversed, and the guard ring 100 and the guard front part 200 are reversed. What is necessary is just to apply to the engaging part with the rear part 6.

The electric fan according to the first embodiment is less likely to cause an erroneous operation of the lock clip and can reduce the operation load of the lock clip.

Embodiment 2. FIG.
FIG. 10 is an enlarged cross-sectional view of a joint portion between the guard ring and the lock clip of the electric fan according to Embodiment 2 of the present invention. In the second embodiment, the shape of the convex portion 107 of the guard ring 100 is changed, and a drop-off preventing washer 8 is attached to the clip fixing screw 7. Others are the same as in the first embodiment.

In the electric fan according to the second embodiment, as shown in FIG. 10, the convex portion 107 is divided by a dividing groove 110 perpendicular to the central axis of the circumferential portion 101, and the screw head is attached when the clip fixing screw 7 is attached. A round hole 111 larger than the diameter of the clip fixing screw 7 is provided in the convex portion 107a on the side, and a screw hole 112 is provided in the convex portion 107b on the screw tip side. The clip fixing screw 7 is fastened to the screw hole 112 through the round hole 111 in such a manner that a drop-off preventing washer enters the dividing groove 110. The drop prevention washer 8 provides an effect of preventing the clip fixing screw 7 from being dropped and lost.

A pin having a similar effect or a drop-off prevention screw may be used instead of the clip fixing screw 7 and the drop-off prevention washer 8.

The electric fan according to the second embodiment is less likely to cause an erroneous operation of the lock clip and can reduce the operation load of the lock clip.

Embodiment 3 FIG.
FIG. 11 is an exploded enlarged view of a joint portion between the guard ring and the lock clip of the electric fan according to Embodiment 3 of the present invention. FIG. 12 is an enlarged cross-sectional view of a joint portion between the guard ring and the lock clip of the electric fan according to the third embodiment. In the third embodiment, the shape of the convex portion 107 of the guard ring 100 is changed, and the shape of the lock clip 300 is changed. Others are the same as in the first embodiment.

As shown in FIG. 11, the electric fan according to the third embodiment is provided with

cylindrical portions

113 and 114 coaxially with the screw hole 108 of the convex portion 107 of the guard ring 100, and the convex shape 107 of the lock clip 300.

Oval grooves

311 and 312 are provided on the surface that contacts the front surface and the surface that contacts the back surface. The cylindrical portion 113 is locked in the oval groove 311, and the cylindrical portion 114 is locked in the oval groove 312. That is, the guard ring 100 has

cylindrical portions

113 and 114 that are coaxial with the screw hole 108, and the lock clip 300 has

elliptical grooves

311 and 312 that rotatably support the

cylindrical portions

113 and 114. Yes. Further, the housing portion 305 of the lock clip 300 has a shape only on the front surface and the back surface, and is easily elastically deformed when the

cylindrical portions

113 and 114 are engaged with the

oval grooves

311 and 312. With the above shape, the lock clip 300 can be slid and rotated even when the clip fixing screw 7 is not attached, and an effect of being held without dropping from the guard ring 100 can be obtained.

The electric fan according to the third embodiment is less likely to cause an erroneous operation of the lock clip and can reduce the operation load of the lock clip.

The configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

1 rotating part, 2 rotating part base, 3 blades, 4 spinner, 5 guard fixing parts, 6 guard rear part, 6a, 101 circumferential part, 7 clip fixing screw, 8 drop-off preventing washer, 100 guard ring, 102 inner peripheral surface, 103, 103a, 103b, 103c, 103d, 103e, 103f, 103g, 103h Guard rear engagement part, 104, 104a, 104b, 104c, 104d, 104e, 104f, 104g, 104h, 310 protrusion, 105 hooking hole, 106 Peripheral surface, 107, 107a, 107b convex part, 108, 112 screw hole, 110 split groove, 111 round hole, 113, 114, 202 cylindrical part, 200 guard front part, 201 grill part, 203, 203a, 203b, 203c , 203d, 203e, 203f 203g relief part, 204a, 204b, 204c, 204d, 204e, 204f, 204g, 204h, 307 side face, 205, 205a, 205b, 205c, 205d, 205e, 205f, 205g, 205h hook groove, 206 clip butting part outer periphery Surface, 207 clip abutting portion, 300 lock clip, 301 main body, 302 surface, 303 hooking portion, 304 groove, 305 housing portion, 306 opening, 308 long hole, 308a one end, 308b other end, 309 counterbore portion, 311, 312 Oval groove.

Claims

A rotating part containing the motor;
Blades driven by the motor;
A guard rear part fixed to the rotating part, a guard front part covering the blades from the side opposite to the motor, and a guard ring connecting the guard rear part and the guard front part; A guard that can be divided into directions,
A locking clip that prevents the engagement between the guard front part and the guard ring from being disengaged;
A fan provided with a clip fixing screw that pivotally supports the lock clip on the guard ring,
The guard ring is provided with a screw hole to which the clip fixing screw is attached,
The lock clip includes a screw penetration portion provided with an elongated hole through which the clip fixing screw attached to the screw hole passes, and the guard ring when the clip fixing screw is disposed on one end side of the elongated hole. An electric fan comprising: a hook portion that engages and is disengaged from the guard ring when the clip fixing screw is disposed on the other end side of the elongated hole.
The electric fan according to claim 1, wherein the guard rear part and the guard ring have an integral structure.
A rotating part containing the motor;
Blades driven by the motor;
A guard rear part fixed to the rotating part, a guard front part covering the blades from the side opposite to the motor, and a guard ring connecting the guard rear part and the guard front part; A guard that can be divided into directions,
A lock clip that prevents the rear of the guard and the guard ring from being disengaged;
A fan provided with a clip fixing screw that pivotally supports the lock clip on the guard ring,
The guard ring is provided with a screw hole to which the clip fixing screw is attached,
The lock clip includes a screw penetration portion provided with an elongated hole through which the clip fixing screw attached to the screw hole passes, and the guard ring when the clip fixing screw is disposed on one end side of the elongated hole. An electric fan comprising: a hook portion that engages and is disengaged from the guard ring when the clip fixing screw is disposed on the other end side of the elongated hole.
The electric fan according to claim 3, wherein the front part of the guard and the guard ring have an integral structure.
5. The lock clip according to claim 1, wherein a counterbore portion to which a screw head of the clip fixing screw is fitted is provided on the one end side of the elongated hole. The listed fan.
The electric fan according to any one of claims 1 to 4, further comprising a drop-off preventing washer attached to the clip fixing screw.
The electric fan according to any one of claims 1 to 4, wherein the clip fixing screw is a drop-off prevention screw.
The said guard ring has a cylindrical part coaxial with the said screw hole, The said lock clip has an elliptical groove | channel which pivotally supports the said cylindrical part rotatably, Any one of Claim 1 to 4 characterized by the above-mentioned. The electric fan according to item 1.